Permutation-padlock.



H. I. GRIM & W. G. LOY.

PERMUTATION PADLOGK. APPLICATION FILED FEB. 17, 1908.

Patented Nov. 17,- 1908 III/IIIA'IM Snoentozs UNITED STATES PATENT OFFTCE.

HENRY F. ORIM AND WILLIAM C. LOY, OF ROCHESTER, INDIANA.

PERMUTATION-PADLOCK.

Specification of Letters Patent.

Patented Nov. 17, 1908.

To all whom it may concern:

Be it known that we, HENRY F. GRIM and WILLIAM C. Lor, citizens of the United States, residing at Rochester, in the county of Fulton and State of Indiana, have invented certain new and useful Improvements in Permutation-Padlocks; and we do dcclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

Our invention relates to locks, but more particularly to a permutation pad-lock, and has for its object to provide a device of this class which is particularly simple in its construction, cheap to manufacture, strong and durable.

A further object of our invention is to provide certain improvements over our pending application Serial No. 354,952, filed January 30, 1907, patented Feb. 18, 1908, No. 879,747.

A further object of our invention is to provide a permutation pad-lock, the interior and working parts of which are readily accessible when the shackle is in an unlocked position, in-such manner that the combination of the lock can be readily changed at any time, and this is accomplished without the use of tools or instruments and without disfiguring the lock in any way.

A further object of our invention is to provide a permutation pad-lock having an improved dial which is so constructed that the lock can be opened in the dark or by a person blind.

With these objects in view our invention consists in the combination of the lock, casing, shackle, tumblers and cap; and our invention also consists in the construction of the dial, all of which will be first fully described and afterwards specifically pointed out in the appended claims.

Referring to the accompanying drawing.

. Figure 1 is an elevation of the lock showing the dial. Fig. 2 is a vertical sectional view taken through the lock and easing. Fig. 3 is 'a plan view of the casing with cap removed. Fig. 4 is a plan view of the lock. Fig. 5 isa perspective view of the cap. Fig. 6 is a plan View of the three tumblers, and

Fig. 7 is a plan of one of the separating washers.

Like numerals of reference indicate the same parts throughout the several figures in which:

1 indicates the permutation pad-lock comprising the body or casing 2, said body or casing being provided with an extension 3 to which the shackle 4 is pivoted at 5. Ex cept for the extension 3 it will be seen that the body or casing 2 is circular, and by referring to F igs. 2 and 3 it will be seen that the said body 2 is recessed at 6 to accommodate the circular tumblers 7, 8 and 9, the annular wall 10, face 11 and extension 3 being integral and preferably formed out of a solid piece of metal. Upon the face 11, as shown in Fig. 1, is formed a dial 12, said dial being provided with a series of raised numbers 13 ranging from one to ten or more, and around the edge of said dial we provide a raised rim 14 as shown in Fig. 2, said rim 14 being provided with a series of notches 15, said notches being disposed at regular intervals to agree with the numbers on the dial, and intermediate notches between the numbers on the dial as clearly shown in Fig. 1. Te 'prefer to make one of the notches larger or deeper as shown at 16 (Fig. 1) which notch will indicate the starting point for the pointer 17, and we provide the end of the pointer 17 with an extension 18 to enter the said notches 15 as shown in Fig. 2 so that the pointer 17 will pass over the rim 14 and drop into the notches 15 as is apparent.

19 indicates the shaft or spindle upon which the pointer 17 is carried, and 20 indicates a turn button secured to said shaft or to said pointer as shown in Figs. 1 and 2, by means of which turn button the pointer 17 is moved over the face of the dial.

Secured to the shaft or spindle 19 or formed integral therewith and on the inside of the casing is a disk 21, said disk being provided around its periphery with a series of notches 22 as shown in Fig. 3.

Referring to Fig. 6 which illustrates the circular tumblers, it will be seen that the tumbler 7 is provided with a lug 23 on its upper face and a similar lug 24 on its lower face, said lug 24 being shown in dotted lines.

The tumbler .8 is also provided with an upper and a lower lug 25 and 26, while the tumbler 9 is provided only With a lower lug 27. It will also be seen from Fig. 6 that a portion of the periphery of each of the tumblers is cut away forming in each tumbler a recess 28, and in this connection it will be seen from Fig. 3 that the wall 10 of the casing is similarly cut away or recessed at 29, the notches 28 in the tumblers forming substantially a circular opening when registering with the recess 29 in the wall 10 of the casing.

30 indicates the cap or top of the lock which, as shown in Figs. 2 and 5, is provided with a flange or wall 31, said flange or wall being provided with preferably two oppositely disposed transverse slots 32 which terminate in oppositely disposed longitudinal slots 33 as shown in Fig. 5; while the wall 10 of the casing is provided with two oppositely disposed lugs 34 arranged to enter the transverse slots 32 in the flange or wall 31 of the cap 30. A central tube 35 carried on the cap 30 accommodates two of the circular tumblers 8 and 9 as shown in Fig. 2; while the lower tumbler 7 is mounted on the shaft or spindle 19, the lug 24. on said tumbler entering one of the notches 22 in the disk 21 in such manner that said tumbler 7 rotates with the disk 21.

Referring now to Fig.4 it will be seen that the cap 30 is cut away or recessed at 36 allowing the end 37 of the shackle 1 to enter the lock as shown in Fig. 2, said end 37 of the shackle being provided with three transverse grooves 38 within which the tumblers 7, S and 9 enter as shown in Fig. 2.

Referring now to Figs. 2, 5 and 7 it will be seen that the central tube 35 on the cap 30 is provided with a longitudinal slot 39, while the washers 40 which are disposed on the central tube 35 are each provided with an extension or tongue 11 which enters the slot 39 in the tube 35 allowing said washers to be moved slidably but not rotatably on said tube 35. By this construction the said washers 40 are not rotated by the tumblers 7, S and 9.

Having thus fully described our invention its operation is as follows: The parts having been assembled the circular tumblers 7, 8 and 9 are rotated by means of the turn button 20 associated with the pointer 17, and any movement imparted to the turn button 20 rotates the disk 21 on the inside of the lock, and as the lower tumbler 7 is in interlocking engagement with said disk said lower tumbler 7 is necessarily rotated with said disk 21. The central or intermediate tumbler 8 having its lower lug 26 directly in the path of the upper lug 23 on the tumbler 7 said tumbler 8 is rotated when the lugs 23 and 26 come into engagement. The central tumbler 8 being provided with an upper lug 25 and the tumbler 9 being provided with a lower lug 27 and said lugs being in the same path the said tumbler 9 is rotated by the tumbler 8 when the said lugs 25 and 27 come into engagement.

In order to unlock the lock or release the shackle at. from engagement with the tunr blers it is necessary that every one of the notches or recesses 28 in the tumblers 7, S and 9 register one above the other and at the same time register with the notch or recess 29 in the wall 10 of the casing, and unless these tumblers are brought into this position one or more of them will be in engagement with the shackle and thereby hold the same in a locked position. The tumblers are placed within the lock so that the pointer 17 will have to be rotated to a certain point and back to a certain point and again forward to a certain point in order to bring the notches in all of the tumblers directly in line and register with the notch or recess 29 in the wall 10 of the casing; consequently the lock can be opened at any time when the con'ibination is known. By the construction of the dial 12 the extent of movement of the pointer over the face of the dial can be determined by the sense of touch, fort-he reason that the numbers being raised they can be determined by touch, and as the end of the vpointer enters the notches 15 in the raised rim 14; of the dial the extent of movement of the pointer can be counted by the number of notches in which it enters. As for example, if the 8th notch from the starting notch was directly opposite the numeral four and it was necessary to rotate the pointer to the numeral four in order to elfect the first movement of the combination the sounds of the pointer passing into the notches successively can be counted and eight of them will bring the pointer to the numeral four. The pointer must now be moved in the opposite direction and if the number of notches be known the pointer can be moved to the exact position and then moved back again in the opposite direction, constituting the last movement required for the combination. By this construction it is apparent that the lock can be opened in the dark or by a person blind as well as if the dial were in plain view.

It will be seen from the drawings that access can be had to the interior of the lock only by removing the cap or top 30, and it will also be seen, particularly from Figs. 2 and 1 that the said top or cap cannot be removed while the shackle is in a locked position, as the said shackle passes through a portlon of the top or cap 30 and securely locks said top or cap against rotation. This willbe evident from Fig. 4 which shows the recess 36 in the cap 30 in dotted linesin one position and in full lines in its normal position. hen the lugs 34 on the wall 10 are passing into the transverse slots 32 on the wall or flange 31 of the cap 30 the recess 36 through which the shackle passes is in position shown in dotted lines in Fig. 4; and sion, a series of tumblers Within said casing when the lugs 34 on the wall 10 reach the longitudinal slots 33 in the wall or flange 31 the cap 30 is slightly rotated by carrying the recess 36 into position shown in full lines in Fig. 4 and causes said lugs 34 to pass into the longitudinal slots 33 in the wall or flange 31, thus securely locking the cap 30 in position. Since it is necessary therefore to rotate the cap 30 into position shown in dotted lines in Fig. 4 in order to remove said cap or top it is clearly evident that this rotation cannot be effected while the shackle 4 is in position shown in Fig. 2; thus the shackle securely locks the top or cap in position and absolutely prevents all access to the interior of the lock.

In order to change or alter the combination of the lock the cap 30 and tumblers arc removed and the last tumbler 7 rotated so that its lower lug will enter a different notch 22 in the disk 21 (Fig. 3). This of course alters the position of the notch 28 on the disk 7 with relation to the pointer 17 on the dial 12, thereby changing the combination.

Having thus fully described our invention what we claim as new and desire to secure by Letters Patent of the United States is:

1. In a permutation pad-lock of the character described, the combination of a casing 2 comprising the annular wall 10, face 11, and extension 3, a shackle at pivoted to said extension, a series of tumblers within said casing for engagement with the free end of the shackle, a cap 30 for said casing, said cap being cut away on its periphery to re ceive said shackle, a wall or flange formed on said cap, said wall or flange being provided with a transverse slot and a longitudinal slot communicating with said trans verse slot, a lug 34 on the said annular Wall 10 arranged to enter said transverse slot and said longitudinal slot, the said annular wall 10 being provided with a recess 29 and the said tumblers being each provided with a notch 28 on its periphery to register with the said recess 29 in the annular wall 10, the said free end of the shackle entering said recess 29 in the wall 10 and said notches 28 in the peripheries of the tumblers, substantially as described.

2. In a permutation pad-lock of the characted described, the combination of a casing comprising an annular wall, a face and an extension, a shackle pivoted to said extenfor engagement with the free end of said shackle, a cap for said casing, a slotted wall or flange on said cap and a central tube on said cap, a lug on the annular wall of said casing for interlocking engagement with the flange or wall 011 said cap, said cap being cut away on its periphery to receive said shackle, the said annular wall being provided with a recess and said tumblers being each provided with a notch in its periphery to register with the said recess in the said annular wall, said central tube on said cap being provided with a longitudinal slot, washers each having a tongue or extension thereon disposed on said central tube, said tongue or extension entering the said longitudinal slot in said central tube to prevent rotation of each of said washers, the said free end of the shackle entering the said recess in the annular wall of the casing and entering said notches in the peripheries of the tumblers, substantially as described.

3. In a permutation lock of the character described, the combination of a casing comprising an annular wall, a face and an extension, a shackle pivoted to said extension, a dial formed on said face, said dial comprising a series of raised numerals or symbols, and an outer rim, said outer rim being provided with a series of notches and a notch distinguishable from said series of notches, a pointer on said dial constructed to engage said outer rim and enter the said notches therein, a series of tumblers within the casing, and a cap for said casing, said tumblers being arranged to engage the free end of said shackle to lock the same, and means for rotating said tumblers to carry the same out of engagement with the free end of the shackle, the whole being arranged in such manner that the extent of movement of the said pointer on said dial can be determined by the sound of the said pointer entering the notches in the outer rim and also determined by the raised numerals or symbols on the said dial by sense of touch, substantially as described.

In testimony whereof, we affix our signatures, in presence of two witnesses.

HENRY F. CRIM. VILLIAM C. LOY. Witnesses:

ENoorr MYERS, J. H. Hoovnn. 

